Abstract: The present invention relates to a device for storing gas under pressure comprising an inner cylindrical pressure vessel (1), the pressure vessel (1) comprising pipe connection (7). According to the present invention, the device is characterized in that the inner cylindrical pressure vessel (1) is arranged inside an outer vessel (3), whereby a substantially annular space (2) is formed between the inner pressure vessel (1) and the outer vessel (3), wherein the annular space (2) between the inner pressure vessel (1) and the outer vessel (3) is filled with a fluid, the outer vessel (3) further comprising venting means (5) at or in the vicinity of the highest point (4, 6) of the outer vessel (3).

Abstract: The present invention relates to a plant for storing gas under pressure. The plant includes at least one basin filled with a liquid, one or more pressure vessels located in the basin for storing the gas including interconnecting piping and connections to a gas supply and a gas discharge network, an anchoring system for supporting the vessels, a cover with a slanted surface on the underside for covering the basin which will lead any gas leak occurring in the basin towards and through a vent, and at least one gas detection equipment located in the vent. The plant is especially suitable for storing compressed gaseous hydrogen and can be connected to a hydrogen fuel replenishment system.

Abstract: The present invention relates to a plant for storing gas under pressure. Said plant comprises at least one basin (4) filled with a liquid (5), one or more pressure vessels (1) located in said basin for storing said gas including interconnecting piping and connections (2) to a gas supply and a gas discharge network, an anchoring system (3) for supporting said vessels, a cover with a slanted surface on the underside (6) for covering said basin which will lead any gas leak occurring in said basin towards and through a vent (7), and at least one gas detection equipment (9) located in said vent. The plant is especially suitable for storing compressed gaseous hydrogen and can be connected a hydrogen fuel replenishment system.